4. Graphing Linear Equations in Two Variables

Find the slope of the following line.

$\frac{1}{2}x-\frac{2}{3}y=4$

Find the slope of the following line.

$0.5x+0.2y=3$

Graph a line with a slope of $0$ that passes through the point $(3,-2)$.

Which of the following graphs below represents the equation $x=3$?